US3378346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diagnostic preparation for the detection of indole
Assignee: Warner Lambert Co LLC
•
Filing: 1965-02-05
•
Granted: 1968-04-16
•
Expires: 1985-02-05
Abstract
No abstract record available.
Inventors
- 👤 Glenville R Watson
- 👤 Benjamin S Schwartz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:59
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/02; C07D209/04; G; G01; G01N; G01N31/00; G01N31/22; G01N33/00; G01N33/48; G01N33/50; G01N33/52; Y; Y02; Y02A; Y02A50/00; Y02A50/30; Y10; Y10S; Y10S435/00; Y10S435/805; Y10T; Y10T436/00; Y10T436/14; Y10T436/145555
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
51 words
A DIAGNOSTIC PREPARATION FOR THE RAPID AND POSITIVE DETECTION OF INDOLE WHICH COMPRISES A DRY STRIP OF A BIBULOUS MATERIAL PREVIIOUSLY IMPREGNATED WITH A 10 TO 40% BY WEIGHT SOLUTION OF OXALIC ACID AND A 1 TO 10% BY WEIGHT SOLUTION OF P-DIMETHYLAMINOBENZALDEHYDE IN AN INERT VOLATILE SOLVENT FOLLOWED BY DRYING.
Claim 2
Dependent Claim
33 words
PROCESS FOR THE DETECTION OF INDOLE PRODUCED BY MICROORGANISMS WHICH COMPRISES ALLOWING THE TEST STRIP AS DEFINED IN CLAIM 2 TO COME IN CONTACT WITH AN UNKNOWN ORGANISM AND OBSERVING THE COLOR FORMED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-04-16 | 1971-10-16 | 1972-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-16 | 1975-10-16 | 1976-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-16 | 1979-10-16 | 1980-04-16 | $7700.00 | Window Closed / Lapsed |